2 files changed, 4 insertions, 1 deletions
diff --git a/Changes b/Changes
index 0d386a6..7e7e8a3 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,9 @@ Revision history for libev, a high-performance and full-featured event loop.
 
 	- new config symbol, EV_USE_CLOCK_SYSCALL, to make libev use
           a direct syscall - slower, but no dependency on librt et al.
+        - assume negative return values != -1 signals success of port_getn
+          (http://cvs.epicsol.org/cgi/viewcvs.cgi/epic5/source/newio.c?rev=1.52)
+          (no known failure reports, but it doesn't hurt).
 
 3.49 Wed Nov 19 11:26:53 CET 2008
 	- ev_stat watchers will now use inotify as a mere hint on
diff --git a/ev_port.c b/ev_port.c
index 4b41bb7..c2dde65 100644
--- a/ev_port.c
+++ b/ev_port.c
@@ -89,7 +89,7 @@ port_poll (EV_P_ ev_tstamp timeout)
   ts.tv_nsec = (long)(timeout - (ev_tstamp)ts.tv_sec) * 1e9;
   res = port_getn (backend_fd, port_events, port_eventmax, &nget, &ts);
 
-  if (res < 0)
+  if (res == -1)
     { 
       if (errno != EINTR && errno != ETIME)
         ev_syserr ("(libev) port_getn");